Protect your IBC from dangerous overpressure conditions. Meets UN standards. 316 Stainless Steel. 3" fusible cap melts at fire temperatures, provides 8.295 square inches of venting area. Hydrostatically tested to 75 psig. Supplied with Fluoropolymer gasket. Safety Cable retains plug during filling and draining operations. 14 1/2" cable for convenient attachment to the container.